1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a9d134b1ca9d199e90c732e5ebb4e2b5bd247d238cc11182a6afaca01d6f34. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ddab4fd-c64b-44ca-b94f-74cd19cc69dd.json and https://artists.proofprofile.net/proofs/artist/8ddab4fd-c64b-44ca-b94f-74cd19cc69dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0734336a30f52c24875c9894a4375883ee80b919b19c7e5826a3fec725ba061. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Syuh1a1uEM3pEiJoDCgBy.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6Syuh1a1uEM3pEiJoDCgBy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c3193cf2e67885b4637ae9567309c14242b005afac644acdf83186d966d3cf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1YwhYSF0DOynLHMO69kg6B.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1YwhYSF0DOynLHMO69kg6B.
{"copyright_id":"0x7628cfd55218e548fb742bad43b7bad6dac4e63a3cc3cfe64b2f0436a1a450b7","isrc":"CA5KR2358306","name":"How To Play It","registered_at":"2026-06-19T15:02:54Z","spotify_id":"0oDqVFx4bCqDJ4eF11Yv9W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7628cfd55218e548fb742bad43b7bad6dac4e63a3cc3cfe64b2f0436a1a450b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0oDqVFx4bCqDJ4eF11Yv9W.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0oDqVFx4bCqDJ4eF11Yv9W.